00582naa#a2200181#i#450# EN\\bibl\2153 20240517111125.5 1999-5644 20140527b2014####ek#y0engy0150####ca RUS RU Economic aspects of sustainable tourism development in the regions of the Russian Federation Journal article CHERKIZOVO Russian State University of Tourism and Service 2014 12 с. Journal article local Ilkevich Sergey Sakharchuk Elena Sergeevna rguts.editorum.ru